/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.antgroup.geaflow.processor;

import com.antgroup.geaflow.api.context.RuntimeContext;
import com.antgroup.geaflow.collector.ICollector;

import java.io.Serializable;
import java.util.List;

public interface Processor<T, R> extends Serializable {

    /**
     * Returns the op id.
     */
    int getId();

    /**
     * Operator open.
     */
    void open(List<ICollector> collector, RuntimeContext runtimeContext);

    /**
     * Initialize operator by windowId.
     */
    void init(long windowId);

    /**
     * Operator process value t.
     */
    R process(T t);

    /**
     * Finish processing of windowId.
     */
    void finish(long windowId);

    /**
     * Operator close.
     */
    void close();
}
